Asked by David

Why do magnesium, phosphorus, and zinc exhibit slightly higher first ionization energies than the general trend within each of their periods?
Answered by DrBob222
Because Mg, P, and Zn exhibit a closed shell or a half-filled shell which imparts slightly more stability to the neutral atom.
Answered by Anonymous
Explain how shielding contributes to the atomic radius trend within a group.
Answered by yo
helpful response in 2019
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